Gas infrared burner



KANEKICHI HAYASHI ET L Aug. 26, 1969 GAS INFRARED BURNER 2 Sheets-Sheet1 Filed Oct. 10, 1967 IN VENTOR.

BY Lima fla am- \SuAM/WMA. A/

Aug. 26, 1969 KANEKICHI HAYASHI ET AL 3,463,139:

GAS INFRARED BURNER United States Patent 3,463,139 GAS INFRARED BURNERKanekichi Hayashi, 19, 3-chome, Nagalke-cllo, Showaku, and SusumuNaiti), 1/ 6 Haruyama-cho, Mlzuho-ku, both of Nagoya-shi, apan FiledOct. 10, 1967, Ser. No. 674,161 Claims priority, application Japan, Oct.17, 1966, 41/96,801 Int. Cl. F24c 3/08 U.S. Cl. 126--39 8 ClaimsABSTRACT OF THE DISCLOSURE A burner having a burner plate covered by anarch which transmits a portion of the heat generated at the plate whileabsorbing and releasing the balance of the heat. The arch serves toprotect the plate from dripping grease and the like and to direct suchwaste into a drawer which is readily removed.

General explanation of drawing FIGURE 1 is a perspective view of acooking apparatus having a gas infrared burner according to the presentinvention;

FIGURE 2 is a plan view of the apparatus of FIG. 1 with a portionthereof broken away;

FIGURE 3 is a sectional view taken along line III-III in FIG. 2; and

FIGURE 4 is a sectional view taken along line IV-IV in FIG. 2.

Detailed explanation of the invention This invention relates to a gasinfrared burner chiefly for use in cooking, and has as an object theprovision of a gas infrared burner which can be used at high thermalefliciency with its burner plate protected from dripping wastes.

According to the present invention, there is provided an improved gasinfrared burner characterized in that a unit provided with a refractoryburner plate having a multitude of small gas openings is furtherprovided with a tunnel shaped covering plate or arch of heat resistingglass or glass ceramic material which forms air gaps between the opposededges of the covering plate and the burner plate, and which is providedadditionally with end plates to close the opposite end openings of saidcovering plate.

According to another feature of this invention, the gas infrared burneris placed at the upper portion of the interior of a casing so as to forma gas cooking apparatus, and this casing is provided at the bottomportion of its interior with a drawer which is adapted to contain sandor water therein or to have its inner surface coated with a heatresisting synthetic resin film such as Teflon film.

An example of the invention will next be explained with reference to theaccompanying drawing in which element 1 is a conventional gas infraredburnerunit comprising a gas chamber 2 provided at the upper surfacethereof with a burner plate 3 made of refractory material and having amultitude of small gas openings 4 therein. Each burner unit 1 (of whichthere are four in the illustrated apparatus) is provided at the topthereof with a tunnel shaped covering plate 5 of heat resisting glass orglass ceramic material to form air gaps 6 between the opposite lowerside edges 5a of covering plate 5 and the opposite side edges 3a of theburner plate 3. Each unit is additionally provided with end plates 7 toclose the opposite end openings 5b of covering plate 5. Each burner unit1 moreover has at each end an outwardly extending bracket 8 and each endplate 7 is placed with its base plate 9 on the same to be fastenedthereto by a screw 10. The base 3,463,139 Patented Aug. 26, 1969 iceplate 9 extends inwardly to form an edge 9a and the covering plate 5 isdetachably placed with its corresponding end portion on the same.

Each gas infrared burner as above is placed at the upper portion of theinterior of a casing 11 and is secured by its brackets 8 to receivingedges 12 of the casing 11 by screws 10, whereby a cooking apparatus isformed.

The casing 11 has at the bottom portion of the interior thereof a drawer13 which is adapted to contain sand or water or to have its innersurface coated with a heat resisting synthetic film such as Teflon film,so that juice or fat and oil or the like dropping from the foodstuff tobe cooked during the cooking operation may be received therein forfacilitating the removal thereof as the occasion demands.

The casing 11 has at its upper surface a receiving frame 14 forsupporting a cooking device such as a pan, a pot, a gridiron or thelike. This frame 14 is attached to the top ends of supporting rods 16which are slidable up and down in guide grooves 16 provided in the sidesurfaces of the casing 11 and may be set at any desired height by a pin17 inserted through openings 18 arranged vertically at regularintervals. The pin 17 has at its outer end a knob 19 and is urgedinwards by a resilient plate 20. Element 21 is a gas mixing tube havingat its outer end a gas supply nozzle 22 provided with a gas cock 23 andan air supply opening 24 having a control valve 25.

The operation of the above apparatus is as follows: When gas is suppliedto the gas infrared burner unit 1 to be burned thereby, the burner plate3 becomes red-hot and thermic rays radiate upwards to pass through thecovering plate 5 positioned over the burner plate 3 and, at the sametime, a part of the thermic rays which is not passed through thecovering plate 5 is absorbed in said plate 5 to produce a secondaryradiant heat for heating foodstuff above said plate 5. When foodstuff isheaated over the covering plate 5, oil, fat, juice or the like extractedtherefrom drops but is intercepted by the covering plate 5 so that thereis no fear that the same will drop on the burner plate 3 to disturb theburning. The oil, fat or the like dropping on the covering plate 5 fallsdown or is splashed sidewards and is received by the drawer 13 for beingeasily removed at any desired time. During the burning operation, theburning exhaust gas, after filling the space formed within the tunnelshaped covering plate 5, of which the opposite ends are closed by theend plates 7, goes down along the inner surface of the covering plate 5and reaches its opposite side lower edges, whereupon the same isdischarged gradually therefrom through the air gaps 6. Accordingly, thecovering plate restrains the discharge of heat from the inner sidethereof to heighten the heat radiant efficiency at the outer surfacethereof.

Thus, in this invention, the burner plate is protected from oil and fator juice or the like while at the same time thermal efliciency isheightened. Additionally, the removal of the dripping oil and fat or thelike can be easily effected by means of the drawer.

What is claimed is:

1. A gas infrared burner apparatus comprising at least one gas infraredburner unit including a refractory burner plate provided with amultitude of small gas openings, a tunnel shaped covering plate abovesaid burner plate and of heat resisting material and having lower sideedges spaced from and defining air gaps with said burner plate, saidtunnel shaped covering plate having an arcuate cross section with ahigher central region and lower side regions for conducting drippingsdownward from said higher central region by gravity, and end plates toclose the ends of said covering plate.

2. Apparatus as claimed in claim 1 comprising a casing enclosing saidunit, and a drawer in said casing below said unit to receive drippingstherefrom.

3. Apparatus as claimed in claim 2, wherein said covering plate isglass.

4. Apparatus as claimed in claim 2, wherein said covering plate is of aglass ceramic material.

5. Apparatus as claimed in claim 2 comprising support means supportingthe covering plate above the burner plate and on which the coveringplate loosely rests, said end plates being fixed on said means.

6. Apparatus as claimed in claim 5 comprising adjustable means abovesaid covering plate for supporting cooking implements above the latterat an adjustable height.

7. Apparatus as claimed in claim 5 comprising a plurality of said unitsarranged in parallel side-by-side relationship.

=8. Apparatus as claimed in claim 5, wherein said support means includesspaced brackets supporting opposite ends of said covering plate andincluding flanges laterally bracketing the covering plate.

References Cited UNITED STATES PATENTS 2,870,828 1/1959 Hess 126-392,898,846 8/ 1959 Del Francia 126-41 2,921,176 1/ 1960 Scofield 4313283,241,542 3/1966 Lotter.

3,267,924 8/1966 Payne 12641 3,369,536 2/1968 Fannon et al 431-328EDWARD G. FAVORS, Primary Examiner US. Cl. X.R.

